Hi,

Thanks for the information.


Is it advisable to use worker mpm or prefork mpm?

If i use worker mpm will it resolve this issue?


Please let me know what shall i do if i have to use worker mpm.

kindly Let me know your inputs.





________________________________
 From: André Warnier <a...@ice-sa.com>
To: Tomcat Users List <users@tomcat.apache.org> 
Sent: Monday, February 6, 2012 4:17 PM
Subject: Re: Frequently Getting Service Temporaily availbale message from 
backend tomcat servers
 
Hi.

Amol Puglia wrote:
> Hello ,
> 
> Thanks for the response.
> 
> I am using following worker and no of threads.
> 
> Worker is Prefork and 
> ThreadsPerChild     25
> 

In the context of a pre-fork Apache, ThreadsPerChild has no meaning and is not 
used.


> Below is the details for the same.
> 
> 
> Server version: Apache/2.2.16 (Unix)
> Server built:   Sep 27 2010 12:48:44
> Server's Module Magic Number: 20051115:24
> Server loaded:  APR 1.4.2, APR-Util 1.3.9
> Compiled using: APR 1.4.2, APR-Util 1.3.9
> Architecture:   32-bit
> Server MPM:     Prefork
>   threaded:     no
>     forked:     yes (variable process count)
> 

The following configuration section will be ignored, because the MPM is not 
"worker", it is "Prefork".  So you need to look at the section <IfModule 
prefork.c>, not the one below.

> <IfModule worker.c>
> StartServers         2
> MaxClients         250
> MinSpareThreads     25
> MaxSpareThreads     75
> ThreadsPerChild     25
> MaxRequestsPerChild  0
> </IfModule>
> 

The following look ok and resonable.

> Timeout 300
> KeepAlive On
> MaxKeepAliveRequests 100
> KeepAliveTimeout 15
> HostnameLookups Off
> 

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